﻿/*
MVC Blanket Library Copyright (C) 2009-2012 Leonid Gordo

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; 
either version 3.0 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; 
if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
*/

using System;
using System.Linq;
using System.Linq.Expressions;

namespace MvcBlanketLib.PageFilters
{
    public static class LinqFilterExtensions
    {
        public static IQueryable<TSource> Where<TSource, TFilterType>(this IQueryable<TSource> query, PageFilter<TFilterType> filter, Expression<Func<TSource, bool>> predicate)
        {
            return (filter.Selected && !filter.RawValue.Equals(filter.NotSelectedValue)) ? query.Where(predicate) : query; 
        }
    }
}
